TypeError Object
(
    [message:protected] => sys\core\Api::getJson(): Return value must be of type array, null returned
    [string:Error:private] => 
    [code:protected] => 0
    [file:protected] => /var/www/music/sys/core/Api.php
    [line:protected] => 113
    [trace:Error:private] => Array
        (
            [0] => Array
                (
                    [file] => /var/www/music/public/app/player/Index.php
                    [line] => 22
                    [function] => getJson
                    [class] => sys\core\Api
                    [type] => ->
                )

            [1] => Array
                (
                    [file] => /var/www/music/public/app/player/Index.php
                    [line] => 44
                    [function] => getCurrentSongInfo
                    [class] => public\app\player\Index
                    [type] => ->
                )

            [2] => Array
                (
                    [file] => /var/www/music/public/app/player/Index.php
                    [line] => 51
                    [function] => render
                    [class] => public\app\player\Index
                    [type] => ->
                )

            [3] => Array
                (
                    [file] => /var/www/music/sys/index.php
                    [line] => 75
                    [args] => Array
                        (
                            [0] => /var/www/music/public/app/player/Index.php
                        )

                    [function] => require
                )

            [4] => Array
                (
                    [file] => /var/www/music/sys/index.php
                    [line] => 85
                    [function] => sys\{closure}
                )

        )

    [previous:Error:private] => 
)